skull beads #13....small bone skull beads set of 4. I have had these beads for many years but I'm sure they are still available. There are several countries that produce them. These are probably 20 years old and are quite primitive. They vary in size but run approx. 1/4" in Diameter and are anywhere between 3/8" to 4/8" Tall. The hole runs vertically through the bead from the top of the skull to the bottom.